What is an internet platform?

An Internet platform (website) is basically a website.

The word web comes from the English language and in this case stands for the net (network, mesh).
The word site also comes from the English and in this case stands for the page (seat, place, site, location).

The web presence (Internet appearance) summarized and linked by the navigation consists of several websites. These can be reached via a web address, such as here www.softwareok.com.

For example, facebook.com is a website that could be described as a large internet platform.